阅读说明：本技术 管道泄漏检测方法、装置及系统 (Pipeline leakage detection method, device and system ) 是由 郑华章 朱晓 韦长兴 邓锦峰 于 2019-11-05 设计创作，主要内容包括：本发明公开了一种管道泄漏检测方法、装置及系统,其中,该管道泄漏检测方法包括：获取泄漏检测请求,泄漏检测请求包括至少一个泄漏检测仪ID；采用泄漏检测仪ID对应的泄漏检测仪测量外界压力,泄漏检测仪包括智能传感器,智能传感器包括压力传感器和湿度传感器；若压力传感器测量得到的外界压力大于压力阈值,则采用湿度传感器测量外界湿度；若外界湿度大于湿度阈值,则发送泄漏警报,泄漏警报包括湿度传感器对应的泄漏检测仪ID。该管道泄漏检测方法可准确检测出管道泄漏情况以及管道泄漏位置,减少维护人员查找泄漏位置的时间,提高管道维护效率。(The invention discloses a pipeline leakage detection method, a device and a system, wherein the pipeline leakage detection method comprises the following steps: acquiring a leak detection request, wherein the leak detection request comprises at least one leak detector ID; measuring the external pressure by adopting a leakage detector corresponding to the leakage detector ID, wherein the leakage detector comprises an intelligent sensor, and the intelligent sensor comprises a pressure sensor and a humidity sensor; if the external pressure measured by the pressure sensor is greater than the pressure threshold, measuring the external humidity by using a humidity sensor; and if the outside humidity is greater than the humidity threshold value, sending a leakage alarm, wherein the leakage alarm comprises a leakage detector ID corresponding to the humidity sensor. The pipeline leakage detection method can accurately detect the pipeline leakage condition and the pipeline leakage position, reduce the time for searching the leakage position by maintainers and improve the pipeline maintenance efficiency.)

1. A method of detecting a leak in a pipe, comprising:

obtaining a leak detection request, the leak detection request including at least one leak detector ID;

measuring the external pressure by adopting a leakage detector corresponding to the leakage detector ID, wherein the leakage detector comprises an intelligent sensor, and the intelligent sensor comprises a pressure sensor and a humidity sensor;

if the external pressure measured by the pressure sensor is greater than the pressure threshold value, measuring the external humidity by using the humidity sensor;

and if the external humidity is greater than the humidity threshold value, sending a leakage alarm, wherein the leakage alarm comprises a leakage detector ID corresponding to the humidity sensor.

2. The pipe leak detection method according to claim 1, wherein prior to said obtaining a leak detection request, the pipe leak detection method further comprises:

acquiring a timing task, wherein the timing task comprises a task period;

if the current time of the system meets the task period, switching the current detection mode into a working mode;

a leak detection request is activated, the leak detection request including at least one leak detector ID.

3. The pipe leak detection method of claim 1, wherein after said sending a leak alarm, said pipe leak detection method further comprises:

and switching the current detection mode into a low power consumption mode.

4. The method of claim 1, wherein the leak detector further comprises a position locator;

after the sending of the leak alarm, the pipeline leak detection method further comprises:

acquiring the instrument position of the ID of the leakage detector by adopting the position locator;

returning to the instrument position.

5. The pipeline leakage detection device is characterized by comprising at least one leakage detector arranged below a pipeline, wherein the leakage detector comprises an intelligent sensor, a core processor and a wireless transmission module, and the intelligent sensor comprises a pressure sensor and a humidity sensor;

the pressure sensor, the humidity sensor and the wireless sending module are respectively electrically connected with the core processor;

each of the leak detectors is spaced at least 50 meters apart.

6. The pipe leak detection device of claim 5, wherein the leak detector further comprises a high precision clock.

7. The duct leak detection apparatus of claim 5, wherein the leak detector further comprises a position locator.

8. The duct leak detector according to claim 5, further comprising a moisture and dust tight enclosure.

9. The apparatus of claim 5, wherein the leak detector encapsulates the pressure sensor and the humidity sensor with a waterproof and high temperature-resistant nano-gel.

10. A pipe leakage detection system comprising the pipe leakage detection apparatus of any one of claims 5 to 9, and adapted to perform the pipe leakage detection method of any one of claims 1 to 4.

Technical Field

The invention relates to the technical field of pipeline assistance, in particular to a pipeline leakage detection method, device and system.

Background

Various comprehensive pipelines, such as a water supply pipeline, a circulating water pipeline, a water discharge pipeline, an oil discharge pipeline or a material pipeline, are buried under the ground of a city or an enterprise workshop, and are like capillary vessels, dense hemp and criss-cross in a human body to form respective networks. Various pipelines are buried underground for a long time, and the leakage phenomenon of the underground pipelines can be caused. The leakage of the pipeline is caused by the damage of the pipeline caused by the external pressure of ground settlement, and the leakage is caused.

At present, the method for detecting the leakage of the pipeline buried underground can only detect whether the pipeline leaks or not, cannot detect the specific leakage site of the pipeline, and brings inconvenience to heat supply maintenance personnel. How to accurately locate the specific leakage position of the underground pipeline becomes an urgent problem to be solved.

Disclosure of Invention

The embodiment of the invention provides a pipeline leakage detection method, a pipeline leakage detection device and a pipeline leakage detection system, which aim to solve the problem of accurately positioning the specific leakage position of an underground pipeline.

A method of detecting a leak in a pipe, comprising:

acquiring a leak detection request, wherein the leak detection request comprises at least one leak detector ID;

measuring the external pressure by adopting a leakage detector corresponding to the leakage detector ID, wherein the leakage detector comprises an intelligent sensor, and the intelligent sensor comprises a pressure sensor and a humidity sensor;

if the external pressure measured by the pressure sensor is greater than the pressure threshold, measuring the external humidity by using a humidity sensor;

and if the outside humidity is greater than the humidity threshold value, sending a leakage alarm, wherein the leakage alarm comprises a leakage detector ID corresponding to the humidity sensor.

A pipeline leakage detection device comprises at least one leakage detector arranged below a pipeline, wherein the leakage detector comprises an intelligent sensor, a core processor and a wireless transmission module, and the intelligent sensor comprises a pressure sensor and a humidity sensor; the pressure sensor, the humidity sensor and the wireless sending module are respectively electrically connected with the core processor; each leak detector is spaced at least 50 meters apart.

A pipeline leakage detection system adopts the pipeline leakage detection device to realize the pipeline leakage detection method.

According to the pipeline leakage detection method, the pipeline leakage detection device and the pipeline leakage detection system, when the external pressure detected by the pressure sensor is greater than the pressure threshold value, the humidity sensor is used for detecting the external humidity, the pipeline leakage condition and the pipeline leakage position can be accurately detected, the time for a maintainer to search the leakage position is shortened, and the pipeline maintenance efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a flow chart of a method of pipeline leak detection in an embodiment of the present invention;

FIG. 2 is another flow chart of a method for detecting a pipeline leak in accordance with an embodiment of the present invention;

FIG. 3 is another flow chart of a method for detecting a pipeline leak in accordance with an embodiment of the present invention;

fig. 4 is a schematic diagram of a pipe leakage detection apparatus according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The pipeline leakage detection method provided by the embodiment of the invention adopts the pipeline leakage detection device to be applied to the pipeline leakage detection system.

In an embodiment, as shown in fig. 1, a method for detecting a pipeline leakage is provided, which is described by taking an example that the method is applied to a pipeline leakage detecting apparatus, and specifically includes the following steps:

s10, a leakage detection request is obtained, wherein the leakage detection request comprises at least one leakage detector ID.

Wherein the leak detection request is a request to detect a pipeline. The leak detector ID is an identifier that distinguishes each leak detector. In the actual construction process, a leakage detector is embedded in a position under the pipeline or a position deviated from the position under the pipeline every 50 meters or corners or reducing positions, and the ID of the leakage detector and the position corresponding to the ID of the leakage detector are recorded, so that the leakage position of the pipeline can be conveniently confirmed in the later stage. To distinguish and locate each leak detector, a leak detector ID should be assigned to each leak detector.

Preferably, the present embodiment may further implement connection between the server and each leak detector by using NBIoT data transmission, where NBIoT (Narrow Band Internet of Things) is constructed in a cellular network, only consumes a bandwidth of about 180KHz, uses a License Band, and may adopt three deployment manners, such as in-Band deployment, a guardband deployment, or an independent carrier, to coexist with the existing network. The method can be directly deployed in a GSM network, a UMTS network or an LTE network so as to reduce the deployment cost and realize smooth upgrading. NBIOT is characterized and targeted by:

(1) super-strong coverage: compared with GPRS, the signal gain of 20db is increased.

(2) Ultra-low power consumption: the targets for terminal power consumption are: based on AA (5000mAh) batteries, the service life can exceed 10 years.

(3) Ultra-large connection: one sector can support tens of thousands of connections, and support low delay sensitivity, ultra-low equipment cost, low equipment power consumption and optimized network architecture.

(4) And (3) ultra-low cost: NB-IoT requires no re-networking and both radio frequency and antenna are essentially multiplexed.

The relative location of the line leak may be subsequently identified based on each leak detector ID by assigning each leak detector an ID to each leak detector in step S10.

S20, measuring the external pressure by adopting a leakage detector corresponding to the leakage detector ID, wherein the leakage detector comprises an intelligent sensor, and the intelligent sensor comprises a pressure sensor and a humidity sensor.

The intelligent sensor (a leakage detector, a pressure sensor or a humidity sensor and the like) can complete functions of field data collection, data preprocessing, data modeling and the like, and the pipeline working parameters are obtained through a machine learning artificial intelligence technology and edge calculation.

Specifically, the embodiment may adopt the film pressure sensor to measure the ground surface subsidence, and after the ground surface subsidence, the pressure at the position of the film pressure sensor becomes large, so that the external pressure, that is, the ground surface subsidence pressure, can be accurately measured; meanwhile, a digital temperature and humidity sensor DHT11 is connected into an ARM32 after being subjected to waterproof treatment and used for detecting the temperature and the humidity of the environment outside the pipeline.

The DHT11 digital temperature and humidity sensor is a temperature and humidity composite sensor containing calibrated digital signal output, and a special digital module acquisition technology and a temperature and humidity sensing technology are applied to ensure that a product has extremely high reliability and excellent long-term stability. The sensor comprises a resistance type humidity sensing element and an NTC temperature measuring element, and is connected with a high-performance 8-bit singlechip. Therefore, the product has the advantages of excellent quality, ultra-fast response, strong anti-interference capability, extremely high cost performance and the like. Each DHT11 sensor was calibrated in an extremely accurate humidity verification chamber. Calibration coefficients are stored in the OTP memory in the form of a program and are called up during the processing of the detection signal inside the sensor. The single-wire serial interface enables system integration to be simple and rapid. The ultra-small volume and the extremely low power consumption make the material become the best choice in the application and the harsh application occasions. The product is packaged by 4-pin single-row pins, and is convenient to connect.

Further, the present embodiment may also employ IPV6-DNS addressing to assign and set each leak detector ID.

In step S20, the external pressure and the external humidity can be accurately measured by using the leak detector having the pressure sensor and the humidity sensor.

And S30, if the external pressure measured by the pressure sensor is greater than the pressure threshold, measuring the external humidity by using a humidity sensor.

Specifically, in this embodiment, the intelligent algorithm module may be used to comprehensively measure and calculate the external pressure measured by the pressure sensor to obtain the comprehensive pressure value of the earth surface.

Because the earth's surface comprehensive pressure value that environmental change caused changes variously, only when meeting the earth's surface comprehensive pressure value and being greater than the pressure threshold value, just need continue to adopt humidity transducer to measure external humidity to improve humidity transducer's availability factor.

And S40, if the external humidity is greater than the humidity threshold value, sending a leakage alarm, wherein the leakage alarm comprises a leakage detector ID corresponding to the humidity sensor.

Specifically, also the external humidity due to environmental changes varies, and only when it is met that the external humidity is greater than the humidity threshold, the leak alarm needs to be sent, so as to improve the accuracy of sending the leak alarm.

Preferably, after step 40, i.e. after sending the leak alarm, the pipe leak detection method further comprises:

s401, switching a current detection mode into a low power consumption mode.

Specifically, the low power consumption mode, that is, the low power consumption sleep mode, cuts off all the peripheral circuit power supplies to realize low power consumption and save electric energy.

Further, in this embodiment, the server may implement the pipeline fault early warning by artificial intelligence and edge computing technology: the intelligent sensor (a leakage detector or a humidity sensor and the like) can complete functions of field data collection, data preprocessing, data modeling and the like, and can realize pipeline working parameters (dynamic analysis and judgment) through a machine learning artificial intelligence technology and edge calculation, once relevant parameters reach an alarm lower limit, a pipeline fault early warning with address coordinate labels is automatically and remotely sent out, relevant managers are prompted that potential safety hazards such as leakage, surface subsidence and the like exist in the pipeline, and the maintenance, investigation and the like need to be carried out on the field.

According to the pipeline leakage detection method provided by the embodiment, when the external pressure detected by the pressure sensor is greater than the pressure threshold value, the humidity sensor is adopted to detect the external humidity, the pipeline leakage condition and the pipeline leakage position can be accurately detected, the time for a maintainer to search the leakage position is reduced, the pipeline maintenance efficiency is improved, the traditional pipeline inspection working mode is changed, and the remote automatic inspection function is realized.

In one embodiment, as shown in fig. 2, before step 10, i.e. before obtaining the leak detection request, the pipeline leak detection method further comprises:

s101, a timing task is obtained, and the timing task comprises a task period.

Specifically, the pipeline leakage detection device can be internally provided with a high-precision clock, and is accurate in timing so as to realize a timing task. The task period is a starting period for executing the task each time, such as 24 hours or 72 hours, and is set according to a specific actual environment, and is not limited specifically here.

And S102, if the current time of the system meets the task period, switching the current detection mode into a working mode.

Specifically, the operating mode is a mode for starting normal operation, and electric energy is consumed to collect data. After the periodic task is completed, the current detection mode can be set to be a low-power-consumption sleep mode, and all peripheral circuit power supplies are cut off, so that low power consumption and electric energy saving are realized.

Furthermore, this embodiment can adopt the power supply of large capacity lithium subcell to solve the inconvenient problem of on-the-spot electricity of getting.

S103, activating a leakage detection request, wherein the leakage detection request comprises at least one leakage detector ID.

Specifically, when the current time of the system satisfies the task period, the leak detection request may be activated, so as to implement the task of automatically detecting the pipeline on a periodic basis.

In the steps S101 to S103, the leakage detection request can be automatically started through setting the timing task, manual activation is not needed, and the timeliness and effectiveness of detecting the pipeline leakage can be effectively guaranteed.

In one embodiment, the leak detector further includes a position locator. As shown in fig. 3, after step 40, i.e., after sending the leak alarm, the pipe leak detection method further includes:

s411, acquiring the instrument position of the leakage detector ID by using a position locator.

Specifically, in this embodiment, a Global Positioning System (GPS) module may be further added to the leak detector to more accurately locate the current position of the leak detector by using a GPS Positioning technology, so as to obtain a position where a pipeline may leak, where the leakage accuracy is less than 50 meters, and display and management of visual information may be performed on a remote electronic map, which is beneficial for a maintenance person to intuitively obtain a location and maintenance address on the map.

S412, returning the instrument position.

Specifically, the present embodiment may obtain a specific instrument location, that is, the longitude and latitude information of the instrument is returned to the information obtaining end wirelessly connected to the pipeline leakage detecting device in combination with the current location of the specific environment.

According to the pipeline leakage detection method provided by the embodiment, when the external pressure detected by the pressure sensor is greater than the pressure threshold value, the humidity sensor is adopted to detect the external humidity, the pipeline leakage condition and the pipeline leakage position can be accurately detected, the time for a maintainer to search the leakage position is reduced, and the pipeline maintenance efficiency is improved.

It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

In one embodiment, a pipe leak detection apparatus is provided. As shown in fig. 4, the pipeline leakage detecting device includes at least one leakage detector disposed below a pipeline, where the leakage detector includes a pressure sensor, a humidity sensor, a core processor, and a wireless transmitting module; the pressure sensor, the humidity sensor and the wireless sending module are respectively electrically connected with the core processor; each leak detector is spaced at least 50 meters apart.

Specifically, the present embodiment may adopt a 32-bit embedded ARM (Advanced RISC Machine) chip as a core processor. NBIOT (Narrow Band Internet of Things) is used as a wireless sending module which is connected with a core processor and realizes data transmission with the Internet of Things.

Preferably, the leak detector further comprises a high precision clock.

Specifically, the leakage detector is internally provided with a high-precision clock for realizing a timing task of accurate timing.

Preferably, the leak detector further comprises a position locator.

Specifically, the present embodiment may further add a GPS module to the leak detector to more accurately locate the current location of the leak detector by using GPS positioning technology, so as to obtain the location of the possible leak of the pipeline, where the leak accuracy is less than 50 meters.

Preferably, the leak detector further comprises a moisture and dust tight enclosure.

Specifically, the leak detector provided by the present embodiment may further include an outer shell with a rating of IP68, so that various adverse environmental influences such as high temperature and high humidity are not feared. Of these, IP68 is the highest level of the connector waterproof rating standard. Evaluating how waterproof performance of the waterproof connector is, mainly looking at the two following digits XX of the IPXX, the first digit X is from 0 to 6, and the highest grade is 6; bit 2X is from 0 to 8 with a highest rank of 8.

Preferably, the leak detector uses waterproof and high temperature resistant nano-adhesive to encapsulate the pressure sensor and the humidity sensor.

The leak detector adopts waterproof high-temperature-resistant nano glue to encapsulate the pressure sensor and the humidity sensor so as to ensure corrosion resistance and moisture resistance of the leak detector.

In an embodiment, a pipeline leakage detection system is provided, which includes any one of the pipeline leakage detection devices, so as to implement any one of the pipeline leakage detection methods. To avoid repetition, a detailed description thereof is omitted.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.